제출 #810229

#제출 시각아이디문제언어결과실행 시간메모리
810229petezaStrange Device (APIO19_strange_device)C++14
0 / 100
5088 ms524288 KiB
#include <bits/stdc++.h>
using namespace std;

int n;
long long a, b, mod;
long long l, r, last=0, sum = 0;
unordered_set<long long> s;

int main() {
    cin.tie(0) -> sync_with_stdio(0);
    cin >> n >> a >> b;
    if(a >= 4e18/b) mod = 4e18;
    else mod = a*b;
    while(n--) {
        cin >> l >> r;
        for(int i=l,ct=l%mod;i<=r;i++,ct=(ct==mod-1?0:ct+1)) s.emplace(ct);
    }
    cout << s.size();
}
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